Lubricator



M. HARD.

LUBRICATOR.

APPLICATION FILED 001.19. |911.

l ,$29,548. Patented Nov. 4, 1919.

3 SHEETS-SHEET I.

M. HARD.

LUBRICATOR. APPLICATION FILED o'c. I9. I9I7.

1,320,548. Patented Nov. 4,1919;

' s SHEETS-SHEET 2.

lVI. HARD.

LUBRICATOR.

APPucATxoN FILED ocT.19, Isn.

l Patented Nov. 4, 1919.

3 SHEETS-SHEET 3.

MALCOLM HARD, OF FLUSHING, NEW YORK, ASSIGNOR TO NATHAN MANUFACTURING COMPANY, OF FLUSHING, NEW YORK, A CORPORATION 0F NEW YORK.

LUBRICATOR.

Specification of Letters Patent.

Patented Nov. 4, 1919.

Application filed Dctcber 19, 1917. Serial No. 197,395.

To all whom t may concern.'

Be it known that MALCOLM HARD, a citizen of the United States, residing at State and 28th streets, Flushing, in the county of Queens and State of New York, has invented certain new and useful Improvements in Lubricators, of which the following is a specification.

My invention relates to that class of lubricators which are operated automatically by the machine to which the lubricator'is applied. There has been considerable difficulty in making such types of lubricators so that they will withstand the hard usage and keep out the dirt which is so fatal in the operation of such lubricators. AThis device has overcome these difhcultieg land is so constructed that all of the operative parts are properly protected from dirt and hard usage and its novelty consists in the construction and arrangement of theparts, as will be more fully set forth.

In the accompanying drawings, Figure 1 is a front elevation of the lubricator as it is adapted to be set up for o eration. Fig. 2 is a side elevation of the lu ricator with the bottom part broken away so as to show the principal operative parts of the lubricator. Fig. 3 is a bottom plan view of the lub-rioator showing the crank arm broken off. Fig. 4 is an enlarged front elevation of the lubricator with the door open and certain portions broken away so as to show the entire interior operative structure and shows the cup in the lower position. Fig. 5 is a front elevation of the lubricator with the door open and shows the cup in the upper position and the automatic stop in operation. Fig. 6 is a cross section on the line 6-6 of Fig. 4. Fig. 7 is a cross section on the line 7 7 of Fig. 4. Fig. 8 is a perspective of the actuating pawl. Fig. 9 is a perspectivezof the holding pawl. Fig. 10 is a perspective of the eccentric shaft. Fig. 11 is a detail of the clutch, part being broken away.

Referring to the drawings, 12 represents the outer casing having a door 13 hinged at 14 and having a flanged portion 15 recessed 'at 16 adapted to make easy the securing of the lubricator in position for operation. On the upper end of the feed screw 17 is rigidly mounted a base plate 18 having a tongue member 19 over which is adapted to fit a grooved member 2O of an oil cup 21. On the feed screw 17 is a nut 22 threaded to engage therewith, with the usual right hand thread and having a flanged handle 23 carrying the knob members 24 mounted thereon. On the upper face of the nut 22 is a circular set of ratchet teeth 25. In the bearing 26 is mounted a shaft 27 having an eccentric 28, which has a bearing 29 on which an actuating pawl 31 is mounted and a bearing 30 on which a holding pawl 32 is mounted.

The shaft 27 has a square portion 33 on which is mounted a clutch member 34 having a driving member 35 and a driven member 36. On the driven member 36 are mounted two dogs 37 which are constantly under the spring tension of springs 38 whereby the dogs are held in constant contact with the ratchet teeth 39 or the driving member 35.

Ridgidly secured to the driving clutch 4member 35 is a crank 40 and driving clutch l member 35 is kept in position by means of washer 41 and lock nuts 42 which are adapted to engage the threaded portion of the shaft 27. To the head of the crank 40 is rigidly secured a tongue member 43 which is bored so that it acts as a bearing for pin 44 which is rigidly secured to the forked arm 45 whereby there may be secured a connection between the operative part of the locomotive or other device on which this lubricator may be used and the operative part of the lubricator.

The lock bar member 47 has an enlarged head member 48 which is mounted in the outer casing 12 by means'of the bearing 46 which is made in the casing 12. This lock bar 47 has a flanged member 49 adapted to engage a flanged member 50 on the upper lever ofthe holding pawl 32. On the upper end of the lock bar 47 is' mounted a spring 51 which contacts with a bell crank retaining lever 52, the lower portion of which is loosely mounted around the bar 47. A bearing pin 53 of the retaining lever 52 is mounted in an interior raised portion 54 of the casing 12 which has been bored at 55 toreceive said bearing pin. The head 48 is cut out at 56 so that the tongue head 57 of the lever 52 will engage therein, normally holding the bar 47 so that the spring 51 is under compression. I

A. piston 58 running through a tubular portion 59 of the casing 12 bears against the same at 60 `so that it is secured in a` rigid position by the turning down of lock nuts 61 on a threaded portion 62 of the piston 58.

The piston 58 has a tubular opening 63 running through the center of the same and this flares into a larger tubular opening 6-1 near the base which is threaded at 65 and a circular nut member 66 having a threaded portion 67 adapted to engage the threaded portion 65 of the piston 58 carries a circular Washer member 69 which is thereby locked in place against the circular base 70 of the piston 58.

The nut 66 has a tubular opening therethrough at 71 and a valve 72 of usual spring type is arranged to control said tubular opening 71. 74 is a pin rigidly mounted on the upper edge of the actuating pawl 31 and adapted to be engaged by the holding` pawl 32 as itis raised. 75 is a plate adapted to act as a guide or retaining member for the lock bar 47 and also to hold a lock hook 76 rigidly in position at one end against a nut at the other end. j

The operation of the lubricator is as follows Having first filled the oil cup 21 which may be removed beforefilling by opening the door 13 and sliding the cup out over the tongue 19 and replacing it the same way, the locomotive or device to whichthe'lubricator has been attached through the connect ing forked arm t5 being set in motion will oscillate the arm 40 so that on each oscillation to the right the driven member 45 of the clutch 34 will simultaneously turn to the right picking up the dogs 37 thereby rotating the driven member 36 of the clutch sin'iultaneously to the right and thus turning the shaft 27 through the engagement of its square portion 33 with the driven clutch member 36. As the shaft 27 is thus intermittently rotated to the right, the eccentric 28 intermittently transfers this motion to the actuating pawl 31 and as it so rotates it rises and falls and inv certain positions engages the ratchet teeth 25 of the nut 22 andy thereby pushes it to `the left., -This intermittent pushing of the nut 22 to the left intermittently feeds the feed screw 17 in an upward direction sol that the oil cup 21 mounted thereon is gradually pushed up against the piston 58 and the circular washer 69 thereon is adapted to engage in close contact the circular sides of the insideof the cup 21. As this gradual pushing up of the cup continues the oil thereinv is forced through the tubular opening 71 past the valve 72 and as the pushing continues, the

oil is thereby forced to whatever part of the locomotive or of the device to which they oil line leads. e y

The base 18, on which the oilv cup 21 is mounted, projects beyond the side of the cup 21 at 73 and as the washer 69 of the piston 58 approaches the bottom of the cup 21 the projection 73 will engage the bell crank lever 52 pushing it up so that the tongue 57v is disengagedfrom the slot 56 thereby releasing the spring 51 so that the lock bar 4-7 will take the position shown in Fig. 5 and the flange 49 of the bar 4:7 will bear against 17 with the oil cupV 21 except by manuall manipulation until the locking bar 47 has beenreset in its operative position as shown in Fig. t. y

The oil cup 21 can then be restored to its lowest position by the manual operation of` the nut 22, taken out and refilled and the operation repeated as above described.

I claim y l 1. A lubricator, havingvin combination a casing, relatively movable lubricant containerand piston members mounted therein and completely inclosed thereby, meansl external of said casing for effecting the relative movement of the members in one direction to withdraw the piston member from the container member, means inclosed by the casing for effecting the relative movement of the members in the other direction to expel the lubricant from the container, and means on the exterior of said casing, whereby the same may be supported in proper position to deliver the lubricant from the container to the device to be lubricated and permitting access to the external operating means. e

2. A lubricator, having in combination an -inclosing casing having Va kdoorway in one side, relatively movable lubricant container and piston members mounted within and housed by the casing, a screw projecting from the casing for effecting the relative movement of the members, an operating device outside the casing engaging the screw for actuating it, means within and housed by the casingl for effecting a step-by-step f movement of the operating device to eect the expulsion. of the lubricant from the container, and a. door for closing the doorway, the lubricantV container beingy accessible through said doorway@ 3. A lubricator, having incombination an.v

inclosing casing having a door in one side, a piston fixed to the casing, a latchl within the same, a screw mounted in the casing and movable toward and from the piston, said screw having a head, a lubricant container of a` size to pass through the doorway and having a slidable and detachable dovetail connection with the head of the screw, said container being movable with the screw t0- ward and from the piston and adapted to receive the latter.

4. A lubricator, having in combination a support, relatively movable lubricant container and piston members, means for relatively moving the members, and automatic means for making the moving means inactive, comprising an automatic operating member, a spring 'for actuating the same, a latch for normally holding the members against movement by the spring, and means controlled by the relative positions of the container and piston members for releasing the operating member from the latc'h to permit its movement by the spring.

5. A lubricator, having in combination a support, relatively movable lubricant container and piston members mounted thereon, means for relatively moving the members, including a pawl, a lifting rod for moving the pawl to an inactive position, a spring for actuating the lifting rod, and a holding latch that detachably engages the rod and normally prevents its movement by the spring, said latch having a portion located in the path of one of the members and actuated thereby to release the rod and permit its movement by the spring.

6. A lubricator, having in combination a piston and a lubricant container relatively movable, means for eiecting a step-by-step relative movement, including a ratchet member, an actuating pawl and a holding pawl coperating therewith and means for operating the actuating pawl, automatic means for moving one pawl out of engagement with the ratchet member, and means carried by one pawl and engaging the other to disengage both from the ratchet member when the rst mentioned pawl is thus automatically moved out of such engagement.

7. A lubricator, having in combination relatively movable piston and lubricant container members, means for effecting a step by step relative movement, including a ratchet member, an actuating pawl and a holding pawl coperating with the ratchet member, one of said pawls having an offset tail piece, automatic means engaging said tail piece for moving the pawl to an inoperative position with respect to the ratchet member, and means carried by one pawl and engaging the other to disengage both when the rst pawl is thus moved.

S. A lubricator, having in combination relatively movable piston and lubricant container members, means for effecting a stepby-step relative movement therein, including a ratchet member, an actuating pawl and a holding pawl coperating therewith, and means for operating the actuating pawl, said holding pawl having an offset tail piece provided with a cam element, a spring actuated rod having a cam engagement with said cam element, the actuating pawl having a portion located in the path of the holding pawl and being disengaged therewith upon the movement of the holding pawl to a position to disengage the ratchet member, and a latch for holding the rod against movement, said latch having a portion disposed in the path of one of the members.

In testimony whereof I affix my signature in presence of two witnesses.

MALCOLM HARD.

Witnesses:

. G. H. LoNGHURsT,

srDoR GORDON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner o Patents,

' Washington, D. C. 

